Web Developer Tips - Tip #55: Did you know...How to change Start-Up Options and Instances of ASP.Net Development Server in a Multi-project Solution
![Vishal Joshi's Tangent: Fix-It: Multiple instances of Visual Studio Development server getting created Vishal Joshi's Tangent: Fix-It: Multiple instances of Visual Studio Development server getting created](http://lh5.ggpht.com/_E8t3edIzcC8/SoMu4mQv5bI/AAAAAAAAA9k/VmGXFhWJzno/image_thumb3.png?imgmax=800)
Vishal Joshi's Tangent: Fix-It: Multiple instances of Visual Studio Development server getting created
![visual studio - Unable to launch the ASP.NET Development server because port '1900' is in use - Stack Overflow visual studio - Unable to launch the ASP.NET Development server because port '1900' is in use - Stack Overflow](https://i.stack.imgur.com/GKWQ6.png)